<div class="container" (mousedown)="startSelection($event)">
      <div class="selection-box"  *ngIf="isSelecting"
        [style.left.px]="selectionLeft"
        [style.top.px]="selectionTop"
        [style.width.px]="selectionWidth"
        [style.height.px]="selectionHeight"></div>
      <ng-content></ng-content>
    </div>